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authorNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>2017-03-28 01:07:41 +0530
committerMichael Ellerman <mpe@ellerman.id.au>2017-08-17 23:04:47 +1000
commit6acdc9a6bad9f23771d24baca763141a24ead6cb (patch)
treef9c328318fdc82b5e7ecf21d2defc2ecce475ed7 /arch/powerpc/net
parent694fc88ce271fd48f7939c032c1247fef81db57f (diff)
downloadlinux-6acdc9a6bad9f23771d24baca763141a24ead6cb.tar.bz2
powerpc/bpf: Use memset32() to pre-fill traps in BPF page(s)
Use the newly introduced memset32() to pre-fill BPF page(s) with trap instructions. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/net')
-rw-r--r--arch/powerpc/net/bpf_jit_comp64.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/powerpc/net/bpf_jit_comp64.c b/arch/powerpc/net/bpf_jit_comp64.c
index 861c5af1c9c4..6ba5d253e857 100644
--- a/arch/powerpc/net/bpf_jit_comp64.c
+++ b/arch/powerpc/net/bpf_jit_comp64.c
@@ -25,11 +25,7 @@ int bpf_jit_enable __read_mostly;
static void bpf_jit_fill_ill_insns(void *area, unsigned int size)
{
- int *p = area;
-
- /* Fill whole space with trap instructions */
- while (p < (int *)((char *)area + size))
- *p++ = BREAKPOINT_INSTRUCTION;
+ memset32(area, BREAKPOINT_INSTRUCTION, size/4);
}
static inline void bpf_flush_icache(void *start, void *end)